1. Check to make sure the skimmer suction valve is open at least 1/3 of the way at the equipment nozzle.
  2. Check to make sure the weir is still in place in the skimmer and moving freely.
  3. Make sure the water level is not too low in the pool for the skimmer to work properly.
  4. Make sure the basket is not full of debris.
  5. Close the main drain line with the skimmer all the way open and if the pump starts to make a lot of noise and stop pumping your skimmer line is plugged or partly plugged. Call a service tech.